CN1174931C - Dispersing concrete sweller - Google Patents
Dispersing concrete sweller Download PDFInfo
- Publication number
- CN1174931C CN1174931C CNB011405376A CN01140537A CN1174931C CN 1174931 C CN1174931 C CN 1174931C CN B011405376 A CNB011405376 A CN B011405376A CN 01140537 A CN01140537 A CN 01140537A CN 1174931 C CN1174931 C CN 1174931C
- Authority
- CN
- China
- Prior art keywords
- concrete
- aluminate
- zeolite
- alunite
- electric power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 27
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 12
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010457 zeolite Substances 0.000 claims abstract description 12
- 150000004645 aluminates Chemical class 0.000 claims abstract description 11
- 229910052934 alunite Inorganic materials 0.000 claims abstract description 9
- 239000010424 alunite Substances 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims abstract description 9
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 claims abstract description 9
- 229910052925 anhydrite Inorganic materials 0.000 claims abstract description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 11
- 239000003513 alkali Substances 0.000 abstract description 4
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000003245 working effect Effects 0.000 abstract 1
- 230000008961 swelling Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 6
- 229910001653 ettringite Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910001569 aluminium mineral Inorganic materials 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000021321 essential mineral Nutrition 0.000 description 1
- 239000011405 expansive cement Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/008—Cement and like inorganic materials added as expanding or shrinkage compensating ingredients in mortar or concrete compositions, the expansion being the result of a recrystallisation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a dispersible concrete expanding agent which is composed of the following components of the proportion by weight: 20% to 40% of mixing clinker of sulphoaluminate and aluminate, 55% to 75% of anhydrite, 1% to 5% of alunite and 1% to 3% of zeolite or 2% to 6% of aluminous slag from electric power plants. The present invention is characterized in that different aluminate minerals are used for regulating expansion rates, and the zeolite with porous structure or the aluminous slag from the electric power plants is used as a chemical additive carrier so as to obtain the following advantages of good additive dispersivity, good easily obtained working property of concrete, high expansion rate, low alkali content and enhanced concrete intensity. In engineering application, the recommended addition amount of the dispersible concrete expanding agent is 8%. Compared with generally commercial expanding agents, the addition amount is saved by 20% to 30%.
Description
Technical field
The present invention is a kind of dispersing concrete sweller, belongs to technical field of concrete additives.
Background technology
Several cement expansive material patent and products are arranged both at home and abroad, divide, mainly contain sulplo-aluminate type, aluminate type, lime type, alunite type by its essential mineral that contains.Sulplo-aluminate type swelling agent is main content with sulfoaluminate clinker, and hydration rate is fast, short with fixed attention to concrete, early wall losses is bigger for expansion energy; Aluminate type swelling agent is main content with aluminate clinker, makes loss of strength, cost higher; Lime type swelling agent is because of calcining temperature and store the influence that absorbs water, and quality is difficult for stablizing, existing the hidden danger of late expansion and should not be used for waterproofing work; Alunite type swelling agent is close to superseded greatly because of alkali content.Mostly consumption is higher for most swelling agents, and interior volume is general 〉=10%, exist to chemical admixture adaptability relatively poor and cause concrete slump loss comparatively fast, bigger defective, can not adapt to the requirement of modern concrete operating technique well.
Summary of the invention
Task of the present invention is to make a kind of dispersing concrete sweller, be characterized in not only the rate of expansion height, interior volume is little, alkali content is low, and it is good to the chemical admixture suitability, make chemical admixture be easy to disperse and play a role by carrier absorption, thereby obtain good concrete work characteristic.
The present invention is achieved in that it is formed by certain weight ratio, common grinding with aluminate mixing grog, anhydrite, zeolite and four kinds of raw materials of alunite by sulplo-aluminate.The weight ratio of sulfoaluminate clinker and aluminate clinker is 1: 1 in the mixing grog.The weight of each raw material is formed: mix grog 20%～40%, anhydrite 55%～75%, alunite 1%～5%, zeolite 1%～3% or Al
2O
3Content is not less than power plant's aluminous slag 2%～6% of 30%.
The chemical reaction mechanism of this swelling agent is the C in the sulfoaluminate clinker
4A
3S, the CA in the aluminate clinker, CA
2, C
2AS, the KA1 (SO in the alunite
4)
2(OH)
6, the Ca (OH) that five kinds of aluminium mineral materials all produce with hydrated cementitious
2And the CaSO of swelling agent self
4Reaction forms ettringite, and the ettringite that forms before concrete hardening only provides intensity, and the ettringite that the sclerosis back forms just provides expansion, and different aluminium mineral materials forms the speed difference of ettringite, and the former the fastest, inferior person is placed in the middle, the latter is the slowest.Therefore, make the adjusted control of speed of expansion, before concrete is unhardened, reduce expansion energy consumption as far as possible, help bringing into play the function that expansion compensation shrinks.Zeolite or aluminous slag have the effect that improves intensity and degree of compactness.What is more important, the screen work shape vesicular structure of zeolite, internal surface area is big, adsorptivity is strong, can be used as the carrier of chemical admixtures such as high efficiency water reducing agent, pumping agent, retardant, admixture is uniformly dispersed in concrete mix, be easy to fast, give full play to the admixture effect; Simultaneously, original moisture content of filling has water retention to concrete in the zeolite pores, does not emanate, bleeding not, can reduce slump-loss, makes concrete have good working performance.Power plant's aluminous slag has higher activity, and Si-rich phase is easy to and Ca (OH)
2Reaction also can be used as the chemical admixture carrier, the effect that obtains and use zeolite facies to work as.
Advantage of the present invention is tangible:
(1) regulates ettringite with different aluminium mineral materials and form speed, increase effectively and expand, strengthen the tension reinforcing steel bar ability, improve cracking of reinforced concrete.
(2) utilize the constitutional features of zeolite, strengthen the chemical admixture dispersiveness, reduce concrete slump loss, also can avoid the common segregation of concrete, bleeding defective.Workability of concrete can be guaranteed.
(3) alkali content is lower than 0.50%, can avoid alkali-aggregate reaction.
(4) volume is 8% o'clock in this product, presses the standard test of JC476 cement expansive material, and limited expansion rate in 7 sky and water 〉=0.035% be higher than the standard code index, and intensity increases.
(5) this product is quantitatively added in the cement, can obtain expansive cement; Quantitatively add cement and make mortar and can obtain waterproof mortar; Quantitatively add in the concrete, can be compensated shrinkage concrete, non-shrinkage concrete, fill concrete, be used for waterproof, antiseepage, cracking resistance and infilling work.
(6) when mixing the system concrete, this Products Show consumption is 8% of cement and an addition material total amount, but equivalent replaces cement, saves 20%～30% than domestic commercially available most swelling agents.
Embodiment
Embodiment
(1) the manufacturing process starting material are mixed into mill according to a certain ratio through broken, metering, control SO3 and fineness index, and homogenizing, packing are carried out factory inspection.
(2) starting material Chemical Composition such as table 1 are listed, and it is listed as table 2 to fill a prescription, and the main chemical such as the table 3 of product are listed, and interior volume is that 8% o'clock standard test physicals such as table 4 is listed.
This product is called for short FEA, and F represents dispersed, and EA is domestic habitual swelling agent appellation.The grinding fineness of FEA embodiment is represented with specific surface area, is 250m
2/ kg～300m
2/ kg.
Starting material Chemical Composition (%) table 1
| Title | SiO 2 | Al 2O 3 | Fe 2O 3 | TiO 2 | CaO | MgO | R 2O | SO 3 |
| Sulfoaluminate clinker | 10.21 | 32.83 | 1.88 | 0.94 | 42.84 | 1.58 | 0.05 | 8.80 |
| Aluminate clinker | 6.01 | 54.15 | 2.73 | 2.36 | 33.66 | 0.80 | 0.18 | |
| Mix grog | 8.11 | 43.49 | 2.30 | 1.65 | 38.25 | 1.19 | 0.12 | 4.40 |
| Anhydrite | 1.48 | 38.69 | 1.43 | 51.20 | ||||
| Alunite | 54.95 | 14.23 | 1.69 | 0.65 | 0.15 | 3.51 | 13.70 | |
| Zeolite | 67.86 | 11.03 | 1.20 | 4.72 | 0.73 | 1.75 | ||
| Power plant's aluminous slag | 55.56 | 33.48 | 5.66 | 3.03 | 2.36 | 0.86 |
FEA Example formulations (%) table 2
| Material name | A | B | C | D |
| Mix grog | 20 | 30 | 30 | 40 |
| Anhydrite | 75 | 65 | 60 | 55 |
| Alunite | 1 | 3 | 5 | 3 |
| Zeolite | 2 | 2 | ||
| Power plant's aluminous slag | 4 | 5 | ||
| Add up to | 100 | 100 | 100 | 100 |
FEA embodiment main chemical (%) table 3
| Embodiment | Al 2O 3 | SO 3 | CaO | R 2O |
| A | 10.48 | 39.50 | 36.39 | 0.16 |
| B | 13.90 | 35.11 | 36.21 | 0.25 |
| C | 15.13 | 34.35 | 34.38 | 0.28 |
| D | 17.85 | 35.87 | 36.10 | 0.27 |
FEA embodiment standard test Main physical performance table 4
| Item is not | Standard | A | B | C | D | |
| Limited expansion rate, % | In the water 7 days, 〉= | 0.025 | 0.058 | 0.46 | 0.046 | 0.041 |
| In the water 28 days ,≤ | 0.10 | 0.081 | 0.62 | 0.063 | 0.070 | |
| In the air 28 days, 〉= | -0.020 | 0.014 | 0.003 | 0.008 | -0.012 | |
| Ultimate compression strength, MPa | 7 days, 〉= | 25.0 | 29.6 | 45.3 | 43.0 | 42.4 |
| 28 days, 〉= | 45.0 | 51.3 | 68.7 | 59.0 | 60.1 | |
| Folding strength, MPa | 7 days, 〉= | 4.5 | 6.8 | 7.2 | 7.1 | 6.9 |
| 28 days, 〉= | 6.5 | 8.2 | 9.8 | 8.5 | 8.8 | |
Claims (1)
1, a kind of dispersing concrete sweller, it is characterized in that its weight composition is: sulplo-aluminate and aluminate mixing grog 20%～40%, anhydrite 55%～75%, alunite 1%～5%, and 1%～3% zeolite or 2%～6% plant slag are arranged, the Al in the plant slag
2O
3Content is not less than 30%, and the weight ratio of sulplo-aluminate and aluminate is 1: 1 in the above-mentioned mixing grog.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011405376A CN1174931C (en) | 2001-11-10 | 2001-11-10 | Dispersing concrete sweller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011405376A CN1174931C (en) | 2001-11-10 | 2001-11-10 | Dispersing concrete sweller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1357505A CN1357505A (en) | 2002-07-10 |
| CN1174931C true CN1174931C (en) | 2004-11-10 |
Family
ID=4675937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011405376A Expired - Fee Related CN1174931C (en) | 2001-11-10 | 2001-11-10 | Dispersing concrete sweller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1174931C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503211B (en) * | 2011-12-01 | 2015-06-17 | 宝鸡锦润材料科技发展有限公司 | Cement concrete and swelling agent thereof, and preparation method of swelling agent |
| CN104402283A (en) * | 2014-10-31 | 2015-03-11 | 桂林华越环保科技有限公司 | Concrete expanding agent |
| CN105254203A (en) * | 2015-09-24 | 2016-01-20 | 滁州京安工贸有限责任公司 | Concrete and mortar expanding agent |
| CN108439844B (en) * | 2018-05-17 | 2020-11-17 | 郑州市建文特材科技有限公司 | Concrete expanding agent, preparation method thereof and concrete |
| CN113561327B (en) * | 2021-07-02 | 2023-03-21 | 珠海春禾新材料研究院有限公司 | Anhydrous tank cleaning method for concrete mixer truck |
-
2001
- 2001-11-10 CN CNB011405376A patent/CN1174931C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1357505A (en) | 2002-07-10 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |